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baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351748975295:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
partial derivative means u treat other variable as constant. u know this ?
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
Right, so we treat y as a constant in the first one..
 2 years ago

Dido525 Group TitleBest ResponseYou've already chosen the best response.0
Which variable are you taking constant>?
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351749134665:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
absolutely! that was my next statement, that u need log diff. here.
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
In my experiences with log diff I always had a function in the form of y = f(x)^g(x).... So what do we do here?
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
do we write y = ......?
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
taking log on both sides, u get log y = g(x) log f(x) then use product rule
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
u'll also need a chain rule for this....
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351749340629:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
oh dear! the y on left and on right are different, u should have used g or some other letter
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
oohhhhhh.. that's where I went wrong... this is off my last quiz :/
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
so it'll be g'/g on the left?
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
yes, after doing product rule , u resubstitute for g
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351749800366:dw
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351749846652:dw
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
absolutely correct
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
same for 2nd question, just replace x with y and y with x
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
right... I just messed up on calling the function y... messed with my head.
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
thanks again for the insight!
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
I'm not going to do the second derivative, I think I can get it... Thanks so much!
 2 years ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
I mean, i'm not going to do it on here.. :)
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
ok, welcome ^_^
 2 years ago
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